Silverline Flap Sanding Grinding Disc 115mm 40 grit Aluminium Oxide 199877

Silverline Flap Sanding Grinding Disc Aluminium Oxide 115mm 40 grit 199877

Barcode: 5060012967376

MPN: 199877

Overview:

The Silverline 40 Grit 115mm Flap Sanding Grinding Disc Aluminium Oxide 199877 is a heavy-duty flap disc designed for fast stock removal and aggressive surface preparation with 4 1/2" (115mm) angle grinders. Manufactured from aluminium oxide abrasive cloth bonded to a tough fibreglass backing disc, it delivers strong cutting performance with a long-life, self-renewing flap design that helps maintain consistent results as the disc wears. Ideal for grinding, sanding and finishing, it’s a practical choice for weld dressing, deburring and general metalwork. The disc fits directly to a compatible angle grinder with no additional backing plate required.

Key Features

• Coarse 40 grit for rapid removal and heavy preparation

• Aluminium oxide abrasive cloth for consistent cutting performance

• Tough fibreglass backing disc for strength and stability

• Self-renewing flap design for long service life

• Suitable for grinding, sanding, finishing, stock removal and weld dressing

• Fits 115mm (4 1/2") angle grinders with no backing plate required

• Designed to outlast conventional resin fibre discs in demanding use

Specifications

• Brand: Silverline

• MPN: 199877

• Barcode: 5060012967376

• Disc Diameter: 115mm (4 1/2")

• Grit: 40 grit

• Abrasive Type: Aluminium oxide

• Disc Type: Flap disc (sanding/grinding)

• Backing: Fibreglass backing disc

• Backing Plate Required: No

Applications

• Grinding and dressing welds

• Fast stock removal and shaping work

• Deburring and edge blending

• Surface preparation on metalwork

• Suitable for steel, cast iron, alloys, fibreglass and wood (task dependent)

How to Use

• Check your angle grinder and guard are suitable for 115mm discs

• Fit the flap disc securely following the grinder manufacturer instructions

• Allow the grinder to reach full speed before contacting the workpiece

• Use steady, controlled pressure and keep the disc moving to reduce heat build-up

• Move to a finer grit (60 or 80) if a smoother finish is required

Grits Available

• 40g - 199877
• 60g - 793761
• 80g - 792089

How The Grit Grades Work:

40 grit being coarse 120 grit being the finest

Silverline 115mm Aluminium Oxide Flap Disc 40 Grit – Key FAQs

• What is a 40 grit flap disc best used for?
  40 grit is a coarse grade for aggressive removal—ideal for grinding welds, shaping metal and stripping back material quickly before refining with finer grits.

• Do I need a backing plate with this flap disc?
  No. This flap disc fits directly onto a compatible 115mm angle grinder, so no additional backing plate is required.

• What materials can I use this flap disc on?
  It’s suitable for steel, cast iron and alloys, and can also be used on materials like fibreglass and wood depending on the task and required finish.

• How does a flap disc compare to resin fibre discs?
  Flap discs can grind and blend at the same time, often lasting longer and leaving a smoother finish than fibre discs, especially for weld dressing and edge blending.

• How do I choose between 40, 60 and 80 grit?
  Use 40 grit for fast removal, 60 grit for general grinding and blending, and 80 grit when you want a smoother finish before painting or coating.

• What safety precautions should I follow?
  Wear eye and face protection and suitable PPE, ensure the grinder guard is fitted, check the disc for damage before use, and keep the disc moving to reduce heat and kickback.

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